Whether it increases your odds by "much" is based on your definition of "much".

I'll disagree slightly. I think that being 100 times more likely to win is much better by any reasonable definition. The problem is that being much better is still extremely lousy when the starting point is so incredibly bad.

The more tickets you buy the bigger the probability of winning. If there are 10 cards and you pick one card your probability of picking the right one is 1/10. If you pick another card then your probability rises to 2/10. By now you have doubled your odds of getting the right card but you are still not close to covering half the odds. By the way it's possible to pick 9 cards and still not pick the right card. That's when you're allowed to scream wtf?!! Lol